320645546023 has 16 divisors (see below), whose sum is σ = 351677005344. Its totient is φ = 289931100160.

The previous prime is 320645546017. The next prime is 320645546047.

320645546023 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 320645546023 - 2²¹ = 320643448871 is a prime.

It is a super-2 number, since 2×320645546023² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320645546063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1830111 + ... + 1997647.

It is an arithmetic number, because the mean of its divisors is an integer number (21979812834).

Almost surely, 2^320645546023 is an apocalyptic number.

320645546023 is a deficient number, since it is larger than the sum of its proper divisors (31031459321).

320645546023 is a wasteful number, since it uses less digits than its factorization.

320645546023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168482.

The product of its (nonzero) digits is 518400, while the sum is 40.

It can be divided in two parts, 320645 and 546023, that added together give a palindrome (866668).

The spelling of 320645546023 in words is "three hundred twenty billion, six hundred forty-five million, five hundred forty-six thousand, twenty-three".